Regensburg 2019 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 30: Statistical Physics far from Thermal Equilibrium
DY 30.7: Vortrag
Mittwoch, 3. April 2019, 12:00–12:15, H6
Coarsening dynamics of the long-range Ising model — Henrik Christiansen, Suman Majumder, and •Wolfhard Janke — Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany
We report Monte Carlo computer simulations of the nonequilibrium coarsening dynamics of the two-dimensional long-range Ising model. Employing an efficient update scheme, our simulations perform ∼ 103 times faster than the standard approach. We carefully examine previous approaches introducing a cut-off in the long-range potential in order to reduce the computational effort. Special emphasis is put on a careful analysis of finite-size effects. This enables us to establish agreement with a theoretical prediction for the time dependence of the domain growth, in contrast to previous numerical studies. Our method can easily be generalized to applications in other systems.
[1] H. Christiansen, S. Majumder, and W. Janke, preprint arXiv:1808.10426.